What material would you use in extreme humidity and mercury vapor lighting?

G

georgianna

#11
Ok, I do have more info, I have been picking the brain of my customer. He said that the gasket he had was made from nitrile and not EPDM, the temps are around 80 degree's,
its not exposed to any outside lighting, the gasket is not covered, it is not exposed to any oils, gas, etc. So the only thing is the extremely high humidity. Can anyone tell if neoprene would work, I know that EPDM from what you have said is the best material, but we all know now that nitrile is the worst. Got any comments?
 
Elsmar Forum Sponsor
T

tarheels4 - 2007

#12
georgianna said:
Ok, I do have more info, I have been picking the brain of my customer. He said that the gasket he had was made from nitrile and not EPDM, the temps are around 80 degree's,
its not exposed to any outside lighting, the gasket is not covered, it is not exposed to any oils, gas, etc. So the only thing is the extremely high humidity. Can anyone tell if neoprene would work, I know that EPDM from what you have said is the best material, but we all know now that nitrile is the worst. Got any comments?
Wow this gets stranger by the minute. I could do a lot of speculation on this one. But I won't.

Your company apparently doesn't make this gasket or you would know what it is made of. Are you a consultant? Or at least trying to be one?
 

Jim Wynne

Staff member
Admin
#13
georgianna said:
Ok, I do have more info, I have been picking the brain of my customer. He said that the gasket he had was made from nitrile and not EPDM, the temps are around 80 degree's,
its not exposed to any outside lighting, the gasket is not covered, it is not exposed to any oils, gas, etc. So the only thing is the extremely high humidity. Can anyone tell if neoprene would work, I know that EPDM from what you have said is the best material, but we all know now that nitrile is the worst. Got any comments?
Georgianna,
You have to help us to help you:

  • Does your company manufacture the gasket?
  • How did your customer determine that the gasket was appropriate for his application?
  • Nitrile (Buna-N) is usually chosen when exposure to petroleum products is an issue. Is that the case in this application?
  • Is there one cracked gasket, or are there many?
  • Was the cracked gasket discovered as a result of failure in the application, or prior to installation?
If your company doesn't manufacture the gasket, I suggest that you get in touch with the manufacturer, and in particular a materials engineer in order to get direct expert information. My own experience has been that gasket and o-ring failure is most often due to using the wrong material and/or construction for the application (the most famous case being the Challenger disaster, of course). Experience has also shown that sometimes customers panic when an outlier is encountered, and unless there's immediate danger you should make sure you have all of the facts before doing anything rash.
 
G

georgianna

#14
Ok, when our customer order this part he is the one who wanted nitrile. We just assumed he knew what he wanted. The gasket that was returned had been out in the field for over one year, its cracked all over. Just to clear up my own mistake it was not made from and EPDM at all that info was given to me by mistake. After reading all of your helpful comments we are going to requote using an EPDM. The only thing we can do now is wait.
 

Al Rosen

Staff member
Super Moderator
#15
georgianna said:
Ok, when our customer order this part he is the one who wanted nitrile. We just assumed he knew what he wanted. The gasket that was returned had been out in the field for over one year, its cracked all over. Just to clear up my own mistake it was not made from and EPDM at all that info was given to me by mistake. After reading all of your helpful comments we are going to requote using an EPDM. The only thing we can do now is wait.
Whoa! What other factors might your customer not specified? There is a lesson to be learned from this. Enhanced contract review would eliminate this type of situation.
 

Jim Wynne

Staff member
Admin
#16
georgianna said:
Ok, when our customer order this part he is the one who wanted nitrile. We just assumed he knew what he wanted. The gasket that was returned had been out in the field for over one year, its cracked all over. Just to clear up my own mistake it was not made from and EPDM at all that info was given to me by mistake. After reading all of your helpful comments we are going to requote using an EPDM. The only thing we can do now is wait.
The gasket was made from material specified by the customer, so why is the customer complaining?
 
G

georgianna

#17
My customer is complaining because his custom is upset, I am going to issue any credits to him, we have updated his file and cheanged the material to an EPDM. Only time will tell if it will stand up the conditions that we know about.
 

Al Rosen

Staff member
Super Moderator
#18
georgianna said:
My customer is complaining because his custom is upset, I am going to issue any credits to him, we have updated his file and cheanged the material to an EPDM. Only time will tell if it will stand up the conditions that we know about.
How about validating it? Where are your and your customer's engineers?
 

Jim Wynne

Staff member
Admin
#19
Al Rosen said:
How about validating it? Where are your and your customer's engineers?
Not only that, but issuing credits for the customer's mistake could set a dangerous precedent, and could be construed as taking responsibility for the failure(s).
 
D

David Hartman

#20
JSW05 said:
Not only that, but issuing credits for the customer's mistake could set a dangerous precedent, and could be construed as taking responsibility for the failure(s).
A big "Amen" to this! You sent the customer just what they ordered. If it's wrong that's their bad, NOT yours!

PS: Make sure you get their detailed requirements in some form of documentation (drawing, detailed PO, email, etc.). :ca:

I worked for a company that was supplying a government agency with a product. During the design stage, the customer kept "upgrading" the design (literally asking for the product to do more than originally contracted), as a result we were delinquent in getting the product to market. This resulted in the customer and our company going before a Senate Appropriations Committee, where documented evidence was submitted demonstrating the customer's indecisiveness driving our delinquency. This saved us embarassment and as well as significant penalty costs.
 
Thread starter Similar threads Forum Replies Date
J Example of a defined procedure for carrying out Material Review Board (MRB) Manufacturing and Related Processes 0
S Advice on how to reduce overhead of handling non-conforming material Nonconformance and Corrective Action 7
R AS9102 FAI Change in Material / Process Supplier AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 4
S Predicate Material 510(k) US Food and Drug Administration (FDA) 1
S Predicate Material 510(k) Medical Device and FDA Regulations and Standards News 3
lanley liao Who can share these material with me ? Training - Internal, External, Online and Distance Learning 1
E Record Retention - Raw Material (Steel Certs) Records and Data - Quality, Legal and Other Evidence 3
M Documents to be included in 1.3 Material check in PPA report APQP and PPAP 4
R MRB (Material Review Board) Process using MS Sharepoint or MS Teams Manufacturing and Related Processes 2
M Material incoming to the production process reflected in PFMEA FMEA and Control Plans 9
R Do we need issue ECN (Engineering Change Notice) towards updated Material Specification? Design and Development of Products and Processes 2
Q Change the shape of the raw material FAI AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 5
S Regrind Material in Medical Devices ISO 13485:2016 - Medical Device Quality Management Systems 1
Anonymous16-2 Dietary Supplement Raw Material/Component Storage and Production Manufacturing and Related Processes 1
H Expired packaging material - Expired unused Tyvek pouches Other Medical Device and Orthopedic Related Topics 2
A Design History File - Not ready to share the design drawings or Bill of Material US Food and Drug Administration (FDA) 2
D Class 3 Device - Change of supplier of material Canada Medical Device Regulations 6
D List A IVD - Change to material supplier EU Medical Device Regulations 3
Skooma Deburring and Tolerances - Is there a Standard for deburring or removing material? Manufacturing and Related Processes 3
D Can PFMEA be used in disposition of NC material? ISO 14971 - Medical Device Risk Management 4
DuncanGibbons Manufacturing Plan vs Material Specification vs Control Plan Manufacturing and Related Processes 5
Jane's Like-for-like critical raw material change qualification - type of testing/ number of lots required ISO 13485:2016 - Medical Device Quality Management Systems 4
L AS5553 Clause 3.1.7 e "Control packaging material ..................reused" AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 0
J Raw material certificates - CC - Safety products - Sheet metal stamping IATF 16949 - Automotive Quality Systems Standard 1
C Manufacturing overages & nonconforming material documentation ISO 13485:2016 - Medical Device Quality Management Systems 3
M Changing supplier of critical raw material (III class device) Other Medical Device and Orthopedic Related Topics 1
I Where can I beg, steal (just kidding of course) or borrow good training material on the ISO 9001:2015 standard? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 5
DMLqms Material for laboratory use or Medical Device? EU Medical Device Regulations 2
C Material from outside CER evaluation period CE Marking (Conformité Européene) / CB Scheme 8
F AS9100D, raw material standards are a requirement for manufacturing? AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 5
6 Management of SDS and Hazardous Material Occupational Health & Safety Management Standards 2
L ASQ CBA biomedical auditor - CBA primer material is enough to study? ISO 13485:2016 - Medical Device Quality Management Systems 6
DuncanGibbons Are there any aerospace specific requirements for material resource planning? AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 1
T Was Just told we could ONLY buy material for AS9100 customers if the DISTRIBUTION house is AS9100 / AS9120 AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 3
C Clean room injection molding, raw material mixing requirements ISO 13485:2016 - Medical Device Quality Management Systems 2
C Raw material Mixing / Preparation for clean room class C injection molding Pharmaceuticals (21 CFR Part 210, 21 CFR Part 211 and related Regulations) 1
P GM TWO (Temporary Work Order) - Is there a specific GM format for the TWO# to be sent with the material? IATF 16949 - Automotive Quality Systems Standard 1
R ASQ reference material clarification - Spiral bound materials allowed in ASQ Exam? Professional Certifications and Degrees 1
Manix Supplied Steel Material Testing Norms and Requirements Supplier Quality Assurance and other Supplier Issues 1
R Material safety data sheet (MSDS) related clause in IATF 16949 manual IATF 16949 - Automotive Quality Systems Standard 17
K Interpretation of significant change - material change Canada Medical Device Regulations 3
M Raw stock material testing discrepancy using an XRF (x-ray fluorescence) analyzer Manufacturing and Related Processes 7
W Scope of MRB (Material Review Board) Responsibilities Misc. Quality Assurance and Business Systems Related Topics 5
M Conformal Coating & AS9102 - Is conformal coating material a COTS part AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 8
M Maximum Height for the stored material or stock materials Occupational Health & Safety Management Standards 1
F Mig Welded Components - IMDS International Material Data System RoHS, REACH, ELV, IMDS and Restricted Substances 1
K ISO 9001 Requirements for Raw Material Supplier Assessment and Approval ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 6
R Customer supplied material - risk and policy advice needed Quality Manager and Management Related Issues 11
P Material selection - How do we select a raw material? Bolt made of SAE J994 grade 2 Customer and Company Specific Requirements 3
Q Does our material suppliers’ supplier have to be at least ISO 9001 certified? IATF 16949 - Automotive Quality Systems Standard 3

Similar threads

Top Bottom